Water-tube boiler.



No. sslj'u'.v 5 Patented mw.' I3, E500-.l

a. c. maks, 1n. WATER TUBE BOILEB.

f (Application med July 5, 1900.)

(No Modal.) i

2 Sh'eets-Shest l.

f' lo. 66-I,7.20. Pa-tenta ov.'|3, i900.

fawn. Hlclcs, mi

WATER TUBE BOILER.

A (Appumion mail .my u, 1960i) (llo lodal-. 2 Sheets-,Sheet 2.

IlNiTeb STATES'n PAT ENT Ustica.

GEORGE C. HICKS, JR., OF ST. LOUIS, MISSOURI.

WTERf-TU BE BGILER.

SPECIFICATION forming part of Letters Patent. N o. 661,720` datedNovember 13, 1900 Application tiled .Tidy 5,1900.

[Se it known that I, GEORGE C. HICKS, Jr., a citizen of the UnitedStates, residing at St. Louis, in the State of Missouri, have inventedcertain new and usefulImprovements in Iater-'lube Boilers, of which the'following is a full, clear, and exact description, reference being,r hadto the accompanyin'?,r drawings, forming part of this specification.

lily invention relates to that class ol' steamboilers in which a seriesof water and steam drums are utilized and banks of circulating tubesprovide communication between the various drums. v

My invent-ion consists in features hereinafter fully described andclaimed.

Figure I is a View in front elevation ot a boiler constructed inaccordance with myhinvention. lfifg. II is a view, partly in verticalsection and partly in side elevation, ot my improved boiler. Fig. III isa View in Vertical section taken on the line III III, Fig. II. Fig. IVis an enlarged vertical cross-sectional View through one of thewater-drums and one of the carriages on which said drums are supported.

l and 2 designate the front and rear walls ot' the boiler-setting, andthe side walls of said setting'.

t is the [ire-chamber, and 5 the tire-grate therein. i

o designates the water-drums, the ends ot' which are sented in theboiler-settingr and the lorward ends ol' which are arranged imlnediatelyabove the tire-chamber i. 'lhe lifard ends ol,` the unter-drums aresupported upon lixcd chairs 7, (sec Vitt. III and dotted lines, liie.ll,) that are held by anchor-rods S. The rearends ot' the water-drumstiate so mounted upon chairs .1 (sec Figs. II and IV) that the expansionand contraction of such drums in the heating" and cooling thereof arepermitted without liability of displacementof thedrums or thewater-tubes connected thereto. rlhs movement ol' the drums on expansionand contraction is [pn-ovided. l'or by carriage-blocks l1, on which thedrums are mountcd, the said carriage-blocks being supported f rollers1:3, that are guided between flanges. 0, projecting upwardly from thechairs 9. As ,the rise' and tall in thedogreeof heat within theboilerchamber occasions contraction and expansion "semi uma-1.75. tNomaar of the water-drums, the carriage-blocks ll move with said drums onthe rollers l2, as will be readily understood.

\Vater is supplied to the drums (i through supply-pipes 13, to which isconnected the feed-pipe lt, the supply-pipes being.: providedwithsuitable valves l5. The supply-pipes 13 lead to delivery-pipes 16,(see Figs. II, III,v and IV,) that extend through the water-drumssupported in suitable brackets i7.y The rear ends ot' the delivery-pipeslo are provided with perlorations 1S, (see Figs. II and IV,) throughinto the rear ends of the drums, from which it circulates forwardly.

lil designates a central equalizing-drum located at. a greater elevationthan the waterequidistant from cach of said water-drums. 'lhisequalizing-drum is connected to each of tubes 20, the tubes preferablybeing composed ol two sets ollset from each other.

21 designates steam-drums located at the upper end of the boiler-chamberand connected by a balance-tube 22. Communication from theequalizing-drum l.) to the steamdrums 2l is provided by banks ofsteam-eirculatinj.: tubes 23, arranged in ol'set series.

2t designates return circulating-tubes leading from the steam-drums-2lto the waterdrums o, these last-named circulating-tubes being alsoarranged in ollsct series.

25Vdesignates the steam-dome, into which communication is provided fromthe steamdrum 2l by the steam-cellulitis 24'.

274 is a water-column pipe leading from the equalizilig-drum l!) vto oneof the steatncol `umus 2o, said water-column pipe being provided with asuitable water-gage 2S.

y Lldesignates ballle-[mrtitionslocated above 'the cireuletting-pipes:30, between the waterdrums V and equalizing-d rum lf), and extendingrearwardly from the front wall of the boiler-setting to point-s beyondthe center of the length ot the drums, (see Fig. IL) so as to cause theheatand products of combustion to pass to the real-end of theboiler-chamber about said drums before ascending therein.

In the practical useof the boiler the water and steam follow the coursesindicated by the approximately the full length thereof and arev whichperl'orations the water inds escape.

drums l5 and on a central line approximatelyv the water-drums'li bybanks ot' circulating- IOO arrows, (see Fig. IIB-JL. e., the hot waterand steam circulate upwardly fromY the waterdrums 6 through thecirculating-tubes 2O into the equalizing-drum 19, in which last-nameddrum the generation of steam is continued. The generated steam passesfrom the equalizing-drum 19 into the steam-drums 2l, in which last-nameddrums the steam is constantly balanced through the balancetube 22, whileit escapes from both of the drums through the steam-columns 26 to thedome 25. The circulation of the water that has not been vaporizedreturns from the steam-drums 2l to the water-drums 6 through the returncirculating-tubes 2i, where it is again heated and rises as before, thecirculation thus going on in the manner described continuously.

The water-drums being arranged at the sides of the fire-chamber andimmediately above the chamber, as shown, it will be seen that theirinner surfaces receive the greatest amount of heat and .their outersurfaces the least amount. By leading the return circulating-tubes 24directly from thesteam-dru'ms 21 tothe water-drums 6 the return water isv caused to pass outwardly in said drums in a swirling manner into thecoolest portions thereof, where it readily deposits. instead of passinginto the hottest inner portions of the drums, where the circulation isgreatest and the deposit of sediment is most diiflcuilt.

I claim as my invention- In a water-tube boiler, the combination of lapair of'water-drums, a central equalizingdrum, circulating-.tubesleading directly from the said water-dru nis to said equalizi 11g-drum,baffle-partitions located above the circulating-tubes andv extendingrearwardly to a point vbeyond the center of the length of the drums,

steamdrums located above the equalizingdrum, steam-circulating tubesleading dircctly from the equalizing-dru m to the steamdrums, returncirculating-tubes leading directly from the steamdrums to thewaterdrums, a balance-tube 22 connecting the steam-drums, a steam-dome25 located transversely of the steam-drums,steam-columns xed mysignature this 28th day of June, 1900. r

. GEO. C. HICKS, JR.

In presence of- E. S. KNIGHT, M. P. SMITH.

